ERTH 2403 Lecture 6: Lecture 6
2 Sep 2016
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Output: seafloor sediments, organism/shells, biogeochemical cycles. Residence time = amount of elements in the ocean versus rate at which the element is added to (or removed from) the oceana. Non-conservative constituent short residence time move to new reservoir. Temperature = most important factor for dissolution of gasses in seawater. Below photic zone co2 increases: respiration, solubility increases with pressure, solubility greater in cold water. Ability to buffer changes in acidity and alkalinity. Co2 +h2o (water) h2co3 (carbonic acid) h+ + hco3 (carbonate ion) co3 sediments shells. (hydrogen ion + bicarbonate ion) h+ + co3. 2- + ca2+ (calcium ion) caco3 (calcium carbonate) precipitation carbonate. The atmosphere = envelope of gases, water vapor, and airborne particles. The atmosphere is thin: 80% of its mass is within 15km of the earth surface. Atmosphere circulation is: a response to differences in the transfer of energy between low and high latitudes: troposphere a. Lowest layer 0-12km where temperature decreases with altitude.
